Despite ultra-low mortgage and savings interest rates, the average credit card rate is still high, and has barely budged over the past year. That's not so lucky for you as a spender -- but it could guide you to a windfall as an investor.

The Federal Reserve announced Wednesday that it would leave interest rates unchanged -- for now. For consumers, that means a holding pattern for the near term, with little impact on borrowing, great rates for mortgages, and no hikes for credit cards. By end of summer, that may change.